#include<iostream>
using namespace std;
typedef struct BinTreeNode
{
	int data;
	struct BinTreeNode* lchild;
	struct BinTreeNode* rchild;
}Node;


bool Fun(Node* head1, Node* head2)
{
	if (head1 == NULL && head2 != NULL) {
		return false;
	}
	if (head1 != NULL && head2 == NULL) {
		return false;
	}
	if (head1->data == head2->data) {
		return true;
	}
}
bool Is_Child(Node* big, Node* small)
{
	if (small == NULL) {
		return true;
	}
	//small!=NULL
	if (big == NULL) {
		return false;
	}
	if (Fun(big, small)) {
		return Is_Child(big->lchild, big->rchild);
	}
}